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參數(shù)資料
| 型號(hào)： | ICS843003AGT |
| 英文描述： | FEMTOCLOCKS CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| 中文描述： | FEMTOCLOCKS晶體到3.3的LVPECL頻率合成器 |
| 文件頁數(shù)： | 2/17頁 |
| 文件大?。?/td> | 295K |
| 代理商： | ICS843003AGT |
843003AG
www.icst.com/products/hiperclocks.html
REV. A JULY 27, 2004
10
Integrated
Circuit
Systems, Inc.
ICS843003
FEMTOCLOCKSCRYSTAL-TO-3.3V LVPECL
FREQUENCY SYNTHESIZER
APPLICATION INFORMATION
CRYSTAL INPUT INTERFACE
The ICS843003 has been characterized with 18pF parallel
resonant crystals. The capacitor values shown in
Figure 3
below were determined using a 31.25MHz or 26.041666MHz
Figure 3. CRYSTAL INPUt INTERFACE
18pF parallel resonant crystal and were chosen to minimize
the ppm error.
ICS843003
POWER SUPPLY FILTERING TECHNIQUES
As in any high speed analog circuitry, the power supply pins
are vulnerable to random noise. The ICS843003 provides sepa-
rate power supplies to isolate any high switching
noise from the outputs to the internal PLL. V
CC, VCCA, and VCCOx
should be individually connected to the power supply
plane through vias, and bypass capacitors should be
used for each pin. To achieve optimum jitter performance,
power supply isolation is required.
Figure 2 illustrates how
a 10
resistor along with a 10F and a .01F bypass
capacitor should be connected to each V
CCA pin.
FIGURE 2. POWER SUPPLY FILTERING
10
V
CCA
10
F
.01
F
3.3V
.01
F
V
CC
C1
33p
X1
18pF Parallel Crystal
C2
27p
XTAL_OUT
XTAL_IN
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相關(guān)代理商/技術(shù)參數(shù) |
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| ICS843003AI01 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS-TM CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS843003I-01 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS-TM CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS843003I-09 | 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:FEMTOCLOCKS? CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS843004 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ LVCMOS/CRYSTAL-TO- 3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS843004-01 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS-TM CRYSTAL-TO- 3.3V LVPECL FREQUENCY SYNTHESIZER |
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